I can report that I have a number of students running BW on a Mac, and things have gone smoothly for the most part.

Logos: The free book for the month of April 2014 is Steve Moyise's Jesus and Scripture. Moyise is a very good scholar, and his books are worth reading. This is a fairly new (2011) book and sells for $12-20 on Amazon, so if you have Logos, get this book now.